netdev - Re: [PATCH 1/2] [net-next] udp: provide udp{4,6}_lib_lookup for nf_socket

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Date:   Thu, 10 Nov 2016 00:08:23 +0100
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     "David S. Miller" <davem@...emloft.net>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        James Morris <jmorris@...ei.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Patrick McHardy <kaber@...sh.net>,
        Eric Dumazet <edumazet@...gle.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] [net-next] udp: provide udp{4,6}_lib_lookup for
 nf_socket_ipv{4,6}

On Tue, Nov 08, 2016 at 02:28:18PM +0100, Arnd Bergmann wrote:
> Since commit ca065d0cf80f ("udp: no longer use SLAB_DESTROY_BY_RCU")
> the udp6_lib_lookup and udp4_lib_lookup functions are only
> provided when it is actually possible to call them.
> 
> However, moving the callers now caused a link error:
> 
> net/built-in.o: In function `nf_sk_lookup_slow_v6':
> (.text+0x131a39): undefined reference to `udp6_lib_lookup'
> net/ipv4/netfilter/nf_socket_ipv4.o: In function `nf_sk_lookup_slow_v4':
> nf_socket_ipv4.c:(.text.nf_sk_lookup_slow_v4+0x114): undefined reference to `udp4_lib_lookup'
> 
> This extends the #ifdef so we also provide the functions when
> CONFIG_NF_SOCKET_IPV4 or CONFIG_NF_SOCKET_IPV6, respectively
> are set.

Applied, thanks Arnd!